Hi All,
I am trying to change the NAME of the disk in RHEL 7 eg /dev/sdb to /dev/data1
I tried the following method to try it.

I am using NAME="data1" here at the end of the udev rule file.
But it doesnt create "/dev/data1"

[root@localhost rules.d]# cat 99-myrules.rules
ACTION=="add|change", SUBSYSTEM=="block", ENV{DEVTYPE}=="disk", ENV{ID_SERIAL}=="3600605b0071b4c0020ca61bd1c625ccc", NAME="data1"
[root@localhost rules.d]# vi 99-myrules.rules
[root@localhost rules.d]# /sbin/udevadm control --reload-rules
[root@localhost rules.d]# /sbin/udevadm trigger --type=devices --action=change
[root@localhost rules.d]# ls -l /dev/data1
ls: cannot access /dev/data1: No such file or directory
[root@localhost rules.d]#

However i replace NAME="data1" with SYMLINK+="data1" and it does create a symlink to "/dev/sdb". But i need to get the first method working.
i.e. rename "/dev/sdb" to "/dev/data1". Please help.

[root@localhost rules.d]# cat 99-myrules.rules
ACTION=="add|change", SUBSYSTEM=="block", ENV{DEVTYPE}=="disk", ENV{ID_SERIAL}=="3600605b0071b4c0020ca61bd1c625ccc", SYMLINK+="data1"
[root@localhost rules.d]# /sbin/udevadm control --reload-rules
[root@localhost rules.d]# /sbin/udevadm trigger --type=devices --action=change
[root@localhost rules.d]# ls -l /dev/data1
lrwxrwxrwx 1 root root 3 Jun 10 03:45 /dev/data1 -> sdb
[root@localhost rules.d]#

The first and most obvious question I have here is "why???" Instead of messing with udev rules to do something like this, it would be FAR simpler to just edit your fstab file, and just mount that device as "data1" in some path. What are you trying to accomplish here?? What is your actual goal in renaming a device like this?

And as you've been told before, you're using Red Hat Enterprise...so contact Red Hat support, since you're PAYING for RHEL...RIGHT???

Agreed. Why do you care ? - if your users can use a name they are happy with. They will (probaly) not even know it's a symlink.